Malicious PDF — malware analysis report

Static analysis result for SHA-256 95cf0faa776f4984…

MALICIOUS

PDF

81.8 KB Created: 2021-04-04 13:31:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 549626de3f146c7c6306fdeceb6ae646 SHA-1: c8028dde0f9be7c5db04c9e917a483f3937ee8b9 SHA-256: 95cf0faa776f4984976ec22efe4512c0b712313bdcb10d7a3decbb3fb41d63d9
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple external links, with one prominent URL suggesting a download for 'goat simulator apk free download'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely a phishing or malware distribution attempt. The document body, though truncated, contains references to the software and authoring tools, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pelibifir.ru/strik?utm_term=goat+simulator+apk+free+download+1.2.4 PDF link annotation
    • http://vumamanepu.sportsontheweb.net/56677703053.pdfIn PDF document text
    • https://cdn.sqhk.co/vopunokapire/Vjc3jeE/74418225162.pdfIn PDF document text
    • http://woronari.getenjoyment.net/47369200472.pdfIn PDF document text
    • http://jonebosu.mywebcommunity.org/25601370374.pdfIn PDF document text
    • http://sarupunojupud.sportsontheweb.net/arbitration_and_conciliation_act_1996_latest.pdfIn PDF document text
    • http://mekujoviwe.mypressonline.com/87595205591.pdfIn PDF document text
    • http://mixutadumekaje.mypressonline.com/44760530549.pdfIn PDF document text
    • https://rolutadaneked.weebly.com/uploads/1/3/2/6/132681657/f21d914c3f.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/potabofu.pdfIn PDF document text
    • http://serururepus.scienceontheweb.net/57843225447.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/ohg5kK6/apple_notification_ringtone_zedge.pdfIn PDF document text
    • https://kobuzefejara.weebly.com/uploads/1/3/1/4/131437799/jixeweve.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/jqicXPk/siren_old_police_siren_sound_effects_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/mekerijiwuv/c3jcieZ/jagebivebalifetamalub.pdfIn PDF document text
    • http://zanovekolasin.mywebcommunity.org/los_juegos_del_hambre_sinsajo_parte_2.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/eQgmVhe/25134334943.pdfIn PDF document text
    • https://nerutemiwuxofa.weebly.com/uploads/1/3/1/3/131398157/kakesijukisutubin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/68faad8a-037b-4e40-a88d-f1118a8ea1fa/timilozifalipixunojudibaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48f6e4d0-3105-4faa-8f8b-c2d4ff3fb03f/19781836356.pdfIn PDF document text
    • http://tikeresepujel.onlinewebshop.net/10572840705.pdfIn PDF document text
    • http://wopojofa.atwebpages.com/48069030472.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C3 5680 bytes
SHA-256: bf4a4811d21e5aa478835c30a96a4216742e35b353630b5e92fc407ee070848a
font_01_sfnt_off00010925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10925 22332 bytes
SHA-256: 6beb99f3b181c6885e8dfc6a0679703c2e7d32849d04cbafcc20bccabe93edb2

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